Gage



A. w. MARUN.

GAGE. APPLICATION FILED 1AN.4| 1919. I

1,351,528. PatentedAug. 31,1920.

2 SHEETS-SHEETI.

A.`w. MARTIN.`

. GAGE.

APPLICATION FILED IAN. 4, I9I9.

1,35 1,528, Patented Aug. 31,1921,

2 SHEETS-SHEET 2.

' following is aspeciication. .v y

This invention relatestogagesand is designed for use particularly by Ymachinists..

i` ,ALBERTW MARTIN, 0F OLM'BUSf HO- To all whom it may concern: I 1

Be it known that I, ,/renirrflvl. l/Linrin, a citizen of the United States, residing at Columbus, in the county of VFranklin and State of Ohio, have invented certain new and useful Improvements, in Gages, of Vwhich the and tool makers where very close and Yminute adjustments or Vmeasurements are necessary. v

ln its preferred embodiment, my tool may ybe used as an insideV or an outside gage or a height gage through a wide; range ofjdistances and at the same time being assured'of extreme accuracy. Y The structure is also ,such that the gage may be rapidlyvset to` position and vto this end, l have provided-a shoulder on both the triangular base member and its slide member, these shoulders being parallel with the bottom ofthe base member and being utilized principally4 for micrometer measurements.

Still a further object of my inventionv resides in a structure embodying two types. of

locking meansfor the slide member, both being independentl of each other and one, Y operating for the quick and temporary adjustment of the parts ,and thej other being for very minute and-accurate adjustmentof the parts. l -A ,A r Stilla further object of my invention resides in the means employed for locking the slide member 'to its `base. y .l

The preferred embodiment of my 'inven-V tion is shown in the accompanying shjeetsof v drawings wherein similar characters-,of ref- .erence designatejvcorresponding parts, ,and

wher'ein-V ,Y Y Figure 1 is a. viewy in side elevation 'of my improvedA type of tool with an .inside or .outside caliper attachment at itsupperend, A

VFig. 2 is an end viewof the structure shown-in Fig. 1,, 1 f, Fig.l 3 is afsidev-iew of an attachment for the bottom of the triangular base memberto complete .the inside `andvr Youtside caliper structure, i v

Fig.` .4 is an end viewof -thest-ructure shownin Fig.- 3,

,Fig -5 is a' side rview ifromrtheopposite side fromthat shown in lFig. 1 and showing specification of Leftrsratnt'. lPatented Augi.i31l,19f0,

` VApplication'led January 4, 1919. SerialivNio. 269,551.

,i a verticalA longitudinal section through theA lower .portion of: the tool yas showninfFig'.1` -v f y Fig. 7 is ajvertical section .taken'through the locking 'means-for, locking the base and slide member together, andvl4 i Fig. `8 is a view in perspective'of the locking screw. used by me. C'

Y In 'the drawing, there'is shown'a'base member 1 oftrangular form whosebottom face 2 is arranged-at right angles to the rear .face 3, the two faces 2V and 3 beingof` such lengththat 'the inclined or hypotenuse. 'edge will serve so as to forma 30 degree angle.

Slidablymounted in connection with this base memberand adapted. to be locked in various positions of adjustment is .a slide member/1 whose top edge 5 is parallel with i the edge 2. Because ofthe 30 degree angle, the vertical riseV` of-theslide member 4 is j ust half'theldistance moved along the angular face, of thez base 1.1' The. slide member 14 is Yprovi ded with alaterally projecting shoulder 6 whose'oppositehorizontal faces vare 1 parallel with eachfotherand :areparallel with the bottom .face 2,0f the base member when parts.: are in the assembled relation shown. Likewise,thebase member 1 isprovided ywith a laterally projecting shoulder gwhose top and y loottoin facesalso are parallelvwith, eachfother and with vthe bottom face 2.7. These shouldersA are designed tobeV u's'ed in connection with the ordinary type of member being subsequently locked-together by -meansof a structure to be presently del:scribedI Y The top face of the'slide member 'istapped as shown at Sand is also provided with an `upwardly proj ectingf pin 9., ,both the :tapped hole8 and the pin9 being designed to. coperate in holding measuringfblocks,

to each otheror ztov, the slide` member llatter 1 the manner shown in Figs. lrandvV and: the

pins `9A operate to prevent shiftingor -a Irela-v tive twist between .parts when they are lassembled, itv beingiinderstood `that ythe top lface of each of the yblocks :10 isfprovided with a similar pin..Y Whengthe tool. isused .micrometer for el'ectin'glg very minutead4- zjusftment vof the''parts, the base an'dslide s'uchfras'are shown at 10, in posit-ion., These f blocks are :provided with'lmurled screws-,11; "by means of whichftheyare'eitheii'attached asian inside or outside caliper?, an arm of o the type jshown at.. vinlayhelocked tofthe g I uppermost sectionby means of the knurledv screw shownV at 13 and a somewhat similar arm 14 may be screwed to the bottom side of the base member which 'is tapped as :shown at 15 and 16`to accommodate the knurled screws 17 andv 18 respectively. It will be noted that the extended portions of these arms havey their corners chamfered to permit the ready manipulation of the tool. This chamfered structure is shown particularly in Fig. 1. In Fig. `5, there is shown an arm-19 screwed in position in the sainemenner'as the arm. 12 but in this case, the outer extremities of the arm is out off as shown at 20-to form a 'sharp edge-21 which permits the tool to be usedas a scriber.

In order to lock the slidemember to the base, the Vbase is cored centrallyfas shown at i' v22 to accommodate the locking plate 23. vThis locking plate is of peculiar construction in that `.it is provided with openings 24k-atV its ends .and an opening 25 at its center. Ad-

jacent its top edge, it is Yslotted or grooved Y as shown at 26A to receive the Vhooked projection. 27 carried by the hypotenuse fof AtheA slide member Screws 28 are 'adapted to secure the lockingplate 23 within the base Vao jthickness of the locking vplatel V23 'and' the Y u IFigs. k6 and* 7 so` that whenthe reducedfporparts coperate in the mannerv shownV in tion 30 ofthe screw' 29V is moved to a dia- ,metric'ally opposite position from that shown kin Fig. 6 the locking plate is allo'wedf Vto play because ofxzits enlargedf openings through which the;screws Y28 pass andi this releasesthe binding action between ther base and. the slide member caused by the hooked vportion27 being engaged 'by the slotted or grooved portion 26 of the locking plate. When the screw 29 is moved to the positions shown intFig. 6, `the thumb of vther eccentric portion 30 draws the lockingplate down which inY turn causes f a pull between theV locking p'lateand the hook27 thus binding the baseand-slide member together. For' suchfadjustments as may rbe determined by means ofthegraduations 31the slide mem- ,n

bermay simplybe unlocked Vand moved to vthe desired positionv and then the screw4 30 again given a'partialkrevolutionjfto lock the parts together.' l l .v However7 should itfbe'found'desirable to obtain adjustments to the thousandtlis part of an inch, the yparts may bel roughly set together as just outlined and then loclred in such position not .by the screw 29 butb'y means of the thumb screw or set Vscrew is carried by the slide member and engages the rod shown at 33, the latter .being adjustably mounted within said slide member.

This rod is also slidably mounted in a bearing portion 34E-at the lower end of the base member and in asecond bearing-por- Yshown at 32 in Fig. 5. `Tliis thumb screw tion 35 at the upper end ofthe basemember- VThe "head of this bearing member is milled out as shown at 36 vto accommodate a knurled nut 37 having a threaded bore, these threads being designed to coperate with the threads shown -at 38 on the upper-end ofthe 'rod 33. Thus, Ywhen the slide member4 is locked to the rod 33 by meansof the set screw 32, 'a slight turning of the nut'37 will move the slide member along the inclined face of the base because of the threaded connection vbetween the nut 37 and the rod 33. In this manner, very minute adjustments maybe attained which may bemeasured by means of ai micrometer operating Y outside the shoulders 6 and 7 or by means of the well adjustment has been reacli'ed.-4 the screw" 29 is tightened to securely lock the parts 3 and 4 togethery and theY set screw 32may then bev unloosened. y

From vthe foregoing description, taken in `known standardgage blocks operating be-` tween the same shoulders. -When the proper connection with the accompanying `sheets of drawings'fit will lbe apparent that I have provided an'improved type of toolv which may be used.y to advantagefin attaining vari#` Vvous measurements. VvBy means of the arms shown'at'f12 and lflandFigsfl and 3, the 'Y tool may be'V used as inside or'outside cali`-,

Persmaybe usedas a height gage and similarly by 'means-of the arm l'shown at 19 itma'y be Means are provided for very conveniently effecting thefminute adjustment of the parts by the use offmicrometers which Yare to be foundv in every machine shop. `Thisfminute .adjustment may be rendered comparatively simple'by the adjusting structure lcreated by the ,rod 33, nut' 37- and "set: screw 32.*' In lad eurely'locke'd vtogether because of the'eccentric screw structure shownin Fig. 8.- Y, It will y'be noted that thehypotenuse of theright angle'dtriangle shown i'stwicel the length ofthe altitude thereof, hencelit .fol-

lows that accurate verticaladjustments Vof Vthe slide 4' maybe effected and facilitatedVv comparing the movements f of Vthe Ysame f the enlarged graduations 31, the latter 'being' of ampli-fied length iny 'proportion lto* f vthe distances they indicateyafeature whichv 180 v By means lof thearm shown at12`it usedras a height gage aswell as ascriber.

dition, theA slider-member and base are rs'e-vr v is rendered possible by virtue of the ratio above given between the hypotenuse `and the altitude of the base member.

lVliat I claim is: Y

l. In a gage, a triangular base member including a recess formed therein and an inclined edge, a slide member m'ovably positioned upon said edge, a shouldered projection rigidly depending from said slide member and arranged to be slidably received within the recess Jonmed in said base member, a plate adjustably located within said recesses, said plate being provided with a shoulder arranged for coperation with said projection, and means operating to raise and lower said plate so as to release or clamp said slide member in its adjusted positions with respect to said base member.

2. In a tool of the character described, a triangular base member, a slide member slidably mounted on said base member, a

vertical movable locking plate mounted within said base member to beA capable of up and down movement therein toward and away from said slide, a hook carried by said slide and engaging said plate, and an eccentric pin carried by said base, said pin having its eccentric portion engaged with said plate to cause downward movement on the part'of the latter.Y

3. In a gage, a triangular base member including a longitudinal recess and an inclined edge, a gage block slidably positioned upon said edge, a shouldered rejection rigidly depending from said bloc and arranged to be slidably received within the recess formed longitudinally in said base member, a plate adjustably located within said recess, said plate being provided with a shouldered portion arranged for clamping cooperation with said projection, means operable to raise and lower said plates so asY to release or clamp said block in its adjusted positions with respect to said base member, and threaded means operating independently of said plate to secure Va nal micro- Vmetric adjustment or' said block.`

4. In a gage, a base member including .a horizontal lower edge and an inclined upper edge, anradjustable block slidably mounted upon said inclined edge, means for locking said base and block in any` desired position of relative adjustment, a shoulder projecting laterally from' said block and having upo'n said edge, height indicating means capable of being removably connected with said slide member, said means including an j arm disposed to project beyond the connes of said base, locking mechanism for retaining said slide member in its adjusted ositionsupon the inclinedV edge of said ase,

and said mechanismvoperating to draw said arm vdownwardly when locking' said slide member in conjunction wlth sald base.

In testimiony whereof I aiiix my signature.

ALBERT w. MARTIN.' 

